Instrument: gas chromatograph mass spectrometer
Instruments separating gases, volatile substances or substances dissolved in a volatile solvent by transporting an inert gas through a column packed with a sorbent to a detector for assay by a mass spectrometer.
For measuring isotopic composition of biomarkers, including amino acid and lipids: Thermo Scientific Trace 1310 Gas Chromatograph-IsolinkII-Delta V Isotope Ratio Mass Spectrometer equipped with an Agilent DB-5 fused silica column (30 m × 0.25 mm i.d., 0.25 µm film thickness) and a Gerstel CIS – 6 inlet.